If using a daisy chain IEEE 1394 (FireWire) can support up to 63 devices at one time.
IEEE 1394 is an interface standard for a serial bus for high-speed communications and isochronous real-time data transfer. It was developed in the late 1980s and early 1990s by Apple, which called it FireWire. The 1394 interface is also known by the brand i.LINK (Sony), and Lynx (Texas Instruments).
The copper cable it uses in its most common implementation can be up to 4.5 metres (15 ft) long. Power is also carried over this cable allowing devices …